Partly unfair and frustrating game design

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soloman_kane wrote:

I have rarely played a game with such weaknesses in the game design and because its not a generell problem, but happens only sometimes, its even more frustrating.
There are several situations build into the game, which result in a 100% chance to die and to lose the accomplishments of hours of playing.

There are sudden appearances of super mobs which can not be killed with your skills nor can you outrun them or do anything about it to escape. The situation is out of hand, doesnt depend on the skills of the gamer anymore. Its like an admin pushes a "you are dead" button. These mobs often have unique skills, which simply cause you to die, regardless of your personell skills.
I wonder, why so much frustration is build into the game.
From a psychological point of view the result is, that, when you get frustrated within a game (and a games purpose is fun, not frustration), the chances that you are willing to pay for it by buying stuff in the shop drastically decrease.
At the end of the day a game should make you feel as if you have accomplished something and not just lost your experience points and found nothing of value. This way it feels just like a waste of time, which is the worst experience a game can offer.
The receipe of the success of Diablo was the constant progress the gamer experienced within the game. Finding constantly something of value, a bit better than what he already had, was one of the reasons.